Which of the following items best summarizes why students attend high school? a) to best prepare them for the college academic and social environments b) because high school knowledge is vital to getting great jobs c) because they need something to do, and they are too young to start working right after middle school d) to keep them busy, off the street, and out of their parents' hair

It’ll be flat affect

How are we suppose to know this

You need to figure out at which x-value does the graph has a tangent line slope of -1.remember, the derivative is the slope of the tangent line. so find the derivative function and set it to equal -1 to find the x-value that will have a tangent line slope of 0.differentiate with the chain rule.    set the derivative to equal -1 and solve for x.      take log base 10 of both sides. also recall that  .    so the x-coord of the point of tangency is .the y-coordinate of this point of tangency can be calculated using the original function:     using point-slope form, the equation of the tangent line is      the x-intercept of this tangent line is when the graph is at y=0.    this rounds off to  .choice c.